Machine for producing chinchilla and other finishes



Aug. 17, 1926. 1,596,028

M. A. SPAUL DING ET AL MACHINE FOR PRODUCING CHINHILLA AND OTHERFINISHES *"iled Jan. 19, 1925 3 Sheets-Shah! 1 Invegrorsfd M mle A. poum chc les P. Thiel Anya Aug. 17 1926. 1,596,028 M. A. SPAULDlNG ET ALMACHINE FOR PRODUCING CHINCHILLA AND OTHER FINISHES File'd Jan. 19

ln venTors.

Mc1nle A. Spqulding Charre's F.Thne\ b 5 8 ;%,k y Afly Aug. 17,1926.1,596,028

M. A. SPAULDING ET AL MACHINE FOR PRODUCING CHINCHILLA AND OTHERFINISHES Filed Jan. 1925 3 Sheets-Sheet 5 Inverflors.

ante A.Spc1u\ding' Char es P. Thiel Patented Aug, 17, 1%25.

' warren FFICE.

I'JIANLEY A. SPAULDING, OF DOVER-FOXCROFT, IvIAINE, AND CHARLES P.'II-IIEL, OF NORTH ANDOVER, MASSACHUSETTS, ASSIGNGRS TO DAVIS 8a FURTHERMACHINE COMPANY, OF NORTH ANDOVER, MASSACHUSETTS, A CORPORATION OFMASSACHU- SETTS.

MACHINE FOR PRODUCING CHINCHILLA AND OTHER FINISHES.

Application filed January This invention relates to improvements in.machines for finishing the napped or pile face of a fabric, the fibresthe pile of which are of wool or of a woolly nature, and

the object thereof is to provide an improved and more durable finishthan has heretofore been produced.

More particularly the invention relates to improvements in machines fortreating pile fabrics to produce a chinchilla efi'ect. The term nappedis used herein in its broad sense to include all fabrics having a nap orpile. In usual types of machines for producing finish. known as thechinchilla finirh or \Vhitney finish, the web of fabric is passedbetween a stationary platen and a relatively movable platen having africtional surface and which is moved in a different direction than themovement of the web of fabric In the production of a Whitney finish themovable platen is recigrocated in a direction transversely of thedirection of movement of the web. In the production of a chinchillafinish the movable platen is rotated about a central axis perpendicularto he direction of movement of the web.

Whitney and chinchilla finishesare produced upon pile fabrics in whichthe pile 18 or wool or of a woolly nature, such asmohair. \Vhen thecloth comes from the preparing machine, which is usually a nappingmachine, the pile fibres of wool or of a woolly nature are more or lesscurly and in termingled and matted together. They do not stand upright,nor do they lie in any particular direction. By reason of their curlynature the fibres are of unequal length when straightened out. \Vhen thesurface of the pile is acted upon by a moving platen, or other device,the curly fibres are stretched out and intermingled in such a manner asto,

give the pile face of the fabric a distinctive appearance. In thelVhitney finish, in

which platens are reciprocated at an angle to the direction of the lineof movement of the web, the resultant surfaeehas a wavy appearance. Ifthe platen, or other rubbing deviee, is given circular or other curvi-19, 1925. Serial No. 3,344.

linear movement the fibres are twisted into knobs, shorter fibres thustreated making more knobs and more closely associated knobs than longfibres with the same movement of the platen. The longer fibres in eithercase are likely to extend from the knob to which they belong andintermingle with the fibres of an adjacent knob. The ob ject of thepresent invention is to provide a process of so treating fabrics havinga nap of woolly nature as to produce a more distinctive finish bycausing the longer of straggling fibres to becomeassociated with thegroups of fibres to which they belong, instead of other adjacent groupsso that a more perfect, distinctive'finish will be'produced.

in the usual manufacture of chinchillas or whitneys the interminglingand holding in place of the fibre. is due to the curly nature of thewool or hair of the pile caused by the interlocking of the serrations ofthe fibre by the movement of the platen and the pressure applied duringsuch movement.

The present invention comprises the process and apparatus for finishingnapped or pile fabrics which comprises successively moving the fibres ofthe nap in different directions. In the production of chinchilla finishthe present invention comprises broadly the process of imparting to thefibres of the nap or pile curvilinear movements first in one directionand subsequently in the reverse direction. By thus causing the fibres ofthe nap or pile first to move in one direction and then in anotherdirection an improved and more permanent laying of the fibres in thedesired position is attained, as the opposite movements of'the fibrestend to separate them from one another and finally to position them morefirmly in the desired will partially destroy the feet of the treatment.

fibres of a pile are in any way intermingled these fibres will betwisted into a knob whether they belong normally to the group whichshould form that particular knob or to an adjacent group.

In the production of the chinchilla finish the difference between theusual continuous circular movement of the fibres in one direction andthe rotative movement first in one direction and then in a reversedirection comprising the present invention is that the knob of fibreswhich has started to form in the old process is never again disturbedand any fibres that have been caught at the start and twisted into thatknob are retained in such position, while in the process forming thepresent invention any fibres not belong ing to a particular knob arefinally started in the opposite direction and twisted into the knob towhich such fibres naturally belong. This produces a cleaner cutchinchilla than one in which the rotative movement is al ways in thesame direction.

A. further object of the invention is to provide a method and apparatuswhich will more effectively prepare the fibres for the finishing actionand which will cause the fibres when acted upon to be more permanentlyset in the desired position. fhis is accomplished by moistening thefabric, prefer ably upon the pile side, prior to the treatment of thepile and also preferablyby heating the fabric during the treatn'ient oithe pile, the heat desirably being applied during the last stage of thefinishing operation.

Any desirable means may be provided for performing this process.Desirably, however, steam is applied to the woven face of the fabricbefore it is treated and one or more of the devices for impartingmovement to the fibres of the pile. including preferably the last, isheated sulliciently to el the moisture. By applying steam to the labricin this manner the fibres of. t e wool or hair will absorb a certai.amount of moisture which will make them more flexible and more easilynlaced in the desired posi on. By heating the fibre during treatment themoisture thus added to the fibres is etipellec and sincev the fibres areworked upon and held in the place they are supposed to take while themoisture is being expelled they will be more permanently held in suchposition without having to rely wholly upon their natural curl and theinterloclrin of their serrations to retain them in permanent position.It is preferable to apply moisture to the surface only of the fabricthan to treat the fabric in wet or a partially wet condition since inthe latter case the goods cannot be completely dried until afterfinishing and the moisture remaining in the goods subsequently actingupon the fibres advantageous ef- It is found that fabrics treated by theprocess embodying the invention present a superior appearance than whentreated by the usual pr cess and that they have a better and longerwearing quality.

A suitable mechanism for performing the process embodying the presentinvention is illustrated in the accompanying drawings, in which,

Fig. 1 is an end view of a machine for producing a Vahitney orchinchilla finish 2 is side elevation of the machine shown in 1;

Fig. 3 is a letail plan view of the roll for e fabric through themachine and stripping mechanism for removing the eerie from the drawingroll;

rig. 4: is a detail plan view of the upper orable p aten and themechanism for actutl same;

Fig. 5 is a plan view of the tension roll over which the fabric is drawnto the finishing mechanisn. The mechanisms illustrated in Figs. 3, l and5 are shown in the relative positions they occupy in the machine;

Fig. 6 is a detail view, partially in section, on line 6--6 Fig. 4:, ofthe shaft and eccentric for actuating a movable platen; and

Fig. 7 is a detail view, partly diagrammatic and partly in verticalsection through the bed of the machine, the movable and stationaryJlZIiGDS, also showing the manner in which the fabric is moistened,passed progres ively between the upper surface of the stationary pla enand the co-operating movable platen, and ther after between the lowersurface of the stationary alaten and the cooperating heated movableplaten, and illustrating in displaced position the tension and drawingrolls.

The finisaing machine illustrated. in he accompanying dra ringscomprises a pair of P 2 conn c'ed by a suitable to 3 which supports thefinishing mechanism. tandards 4; and 5 mounted upon the end frames 1 and2 extend upwardly and ar provided with curved ends overhanging thecentral portion of the machine and provided with bosses 6 and '7 inwhich is mounted a shaft 8 of a winch having depending chains 9 and 10provided with hoolcs adapted to be engaged with the mem bers of thefinishing mechanism to raise and lower them from position in dismantlingor assembling the machine. The winch shaft 8 has at one end a worm wheel11 which is by a worm 12 which is fixedly secured upon a shaft 13mounted'in a bracl-tet extending from the standard 5 and is actuated bya crank 15.

The finishing mechanism comprises a lower platen 16 which is fixedlysecured to the bed 3, an upper platen l? which desirabl is locateddirectly above the platen lo and a movable intermediate platen 18. Theplatens I6; 17' and 18 desirably present contiguous flat surfaces whichare provided with means for frictionally engaging the web of clothpassed betweenthem. Such frictional faces may be provided by stretchingsuitable material, such as webs of carpet or sheets of rubber, acrossthe faces of the platens. The friction of the material which isstretched across the stationary platens may be sheets 19 and 20 ofcarpet rubber or other struction illustrated herein the intermediatemovable platen is reciprocably mounted between pairs of parallel guideplates 26 and 27 which are spaced apart by sleeves 28 ample as trolledby brake bands 38 and which surround respectively vertical screwthreaded standards 29 having nuts 30 to support-the lower plate and nuts31 which are clamped down upon the upper plate. By adjusting the nuts 30and 31 the intermediate mov'ablc 'platen may be raised and loweredrelatively to the lower platen. The upper platen 17 .is provided witharms 32 extending outwardly from its ends, the arms being provided withholes to receive the up per ends of the standards Nuts and 3 1 onthe'standards 29. located respectively above and below the arms 32,provide means for raising and lowering the upper platen 17 relatively tothe movable platen.

Any suitable means may be provided for passing the web of fabric betweenthe platens. In the construction illustrated the fab .ric 35 passes fromthe cloth roll (not shown) beneath an idler 36, thence over a portion ofthe periphery of a tension roll 37 provided with a cloth-engagingsurface, such for exa surface provided by card-cloth- The rotation ofthe friction roll is con- 39 which are .pivotally mounted upon a stud L0projecting from, the end'franie and frictionally engage a pulley or druml1 which is secured to the shaft 12 of .thefriction roll. The frictionaling.

engagementbetween the brake bands 38' and 39 and the drum 41 may bevaried by a bolt 43 passing through extensions of the bandsand having anut, such as a winged nut 1 1 engaging one of the extensions.

p The web of cloth 35 passes from the ten-' sion, roll over suitableidle 'rolls 4L5 and lti, th latter of which directs the cloth beneaththe under surface of the upper platen 17.

by a worm 58 upon a vertical shaft mounted a cylindrical The web thenpasses over idlers 17 and 18 o vided with a cloth-engaging surface, suchas card-clothing which will produce a nonslipping and uniform tensionupon the cloth.

The CQFQl-ClOtlllllg desirably is placed upon the drawing roll insections which are separated to provide paths for endless strippingbelts which pas over an idle roller 51. By reason this construction thecloth which is engaged by the card-clothing of the v drawing roll isgradually stripped from the roll by the endless stripping belts andthereby delivered from the machine.

Any suitable means may be provided for actuating the drawing roll. Asillustrated herein the shaft of the drawing roll is provided with a wormgear 52 which is engaged 5 1 mounted in suitable hearings in the frame.the lower end of the shaft 54 being provided with a. beveled pinion 55which engages a coinplementarv pinion 56, preferably of smallerdiameter, upon a shaft 57 having a pulley 58 which is driven by a belt59 from a pulley 60 from a main shaft 61 which is journalled in suitablebearings in the lower portion of the end frames of the machine.

The main shaft may be driven in any suitable manner as from fixed andidle pulleys 62 and 68 which may be actuated from any suitable source ofpower.

v Any suitable mechanism may be employed for actuating the intermediatemovable platen. 7 In] the construction illustrated herein each end ofthe movable platen has affixed to it a guide plate case which comprisesa block 64 having laterally extending flanges which are bolted to theends of the. platen 18 and a description of one will serve as adescription for both. The block 6 1 is provided with a cylindricalaperture in which is guide plate 66 having a diametrically extendingslot 67. The guide plate (36 is rotarily adjustable and adapted to besecured in adjusted position by a set screw 68. The block 64-. is alsoprovided with an outwardly extending arm 69 having at its end acylindrical strap'TO in which is mounted a cylindrical guide plate 71provided with a slot 72 which guide plate and slot may be consideredcomplementary to the guide plate 66 and slot 6'4.

The guide plate 71 desirably has an annular flange 73 which rests uponthe strap 'i'O and the guide plate is held in rotarily adjusted positionby set screws 7 1. The periphery of the flange 73 may be provided withgradua'tions constituting a dial adapted to register with a suitableindex upon the periphery of the strap and the guide plate 66 dewhich'maybe caused to register with a suitable index upon the block 64, asillustrated in Fig. 4, so that theslots 6'7 and 72 may be set in propercorrelation. I

A hearing block 75 is reciprooably mounted in the slot 72 of the guide71, but is adapted to be held in stationary position when it is desiredto impart a circular movement to the platen by one or more set screws76. The bearing block 75 provides a bearing for a shaft 77 extendingupwardly from a boss 76 upon a circular plate 79 which rests upon acomplementary circular plate 80 and is adjustably secured thereto by aradial key 81 and suitable bolts 82 which pass through slots in theplate 79 and are seated in the circular plate 80. lhe circular plate 60is secured to or formed upon the upper end of a vertical shaft 83 whichis mounted in suitable bearings in the end frame of the machine and isprovided its lower end with a beveled gear which meshes withcomplementary beveled gear 85 upon the main shaft 61. By adjusting thecircular plate 79 radially with respect to the plate 80 the shaft 77 maybe placed at differentdesired distances from the axis of the shaft 83 sothat the shaft 77 in effect forms a cranlr which, upon rotation of theshaft 83, will travel in a circle about the axis of the shaft 83.Consequently the bearing 75 if free will be reciprocated 1n the slot 72during the rotation of the crank 77 and a bodily.

movement will be transmitted to the arm 69 and the movable platen in adirection perpendicular to the walls of the slot.

The plates 26 and 2'? are provided with alined pin holes 86 to receivepins which pass through the slot 67 in the guide plate 66 and when theslot 6? of the guide plate 66 is placed in proper relation to theposition of the slot 7:? in the complementary guide plate 71 the platenmay be given a predetermined direction of movement. Thus by placing theslots 67 and 72 in perpendicular relation, to each other the platen maybe given rectilinear movements either at right angles to the directionof the movement of the web of fabric between the platens, or in anydesired angular direction relatively to the movement of the fabric. Bysuch adjustments any desired'character of Vi hitney finish may beproduced upon. the pile of the fabric.

In producing chinchilla finish the platen isgiven a curvilinearmovement, usually a circular movement. To produce this finish the pinsare removed from the pin holes 86 that the platen is given amovement tocorrespond to the rotative movement imparted to the ends of the arns 69by the cranks 75. In producing such circular movements both bearingblocks 75 are usually locked in position by the set screw 76, but one orboth blocks may be permitted to slide freely, whereupon differentcurvilinear movements it is acted upon by the finishing mechanism.

iiloisture may be applied to the fabric in any suitable way, preferablyby projecting it upon the pile of cloth in advance of its ongement bythe relatively movable platens. Desirably the moisture is applied byjets of steam projected upon the pile side of the cloth.

it further important feature of the inven tion consists in applying heatto the fabric as it passes through the finishing mechanism,

the heat desirably being applied during the finishing operation so thatthe moisture which has previously been supplied to the fabric isexpelled during the last finishing operation parted to the fibers thanhas heretofore l een attained.

A preferred embodiment of these features of invention is illustrated inthe apparatus shown in the drawings, particularly in Fig. 7, in whichthe moisture is shown as being projected upon the cloth in jets from asteam pipe 92 which extends transversely of the web of the cloth inadvance of the idle roll d5 which is a sutiicient distance from thepoint at which the web is engaged by the relatively movable platens topermit the moisture to act upon the fibres of the pile.

Any suitable means may be provided for expelling the moisture thussupplied. As illustrated the lower stationary platen 16 is provided witha chamber for a heating fluid which as shown comprises a. conduit 93within the body of the platen 16 and which passes back and forth,preferably lengthwise of the platen, and communicates with a conduit- Sl leading to the conduit 92 which projects the steam upon the pile ofcloth. Steam is supplied to the intake end 95 of the conduit from anysuitable source. Thus the steam is utilized both for the purpose ofheating the lower stationary platen and also for moistening the web offabric.

in the operation of the machine the web of fabric is led from the usualroll (not shown) upwardly over the idler 36, thence over the tensionroll 37 where it is engaged by the card-clothing thereof, thence overthe idlers and t6 between the upper stationmeans 3 and a more permanentset imary platen and the intermediate movable platen. Passing from themovable platen it is led over the idlcrs ll" and i8 and between thelower stationary platen and the movable platen, thence over the draw' igroll 49 where it is engaged by the teeth of the card-clothing and isfinally stripped from the drawing roll by the stripping bands 50 anddelivered from the machine. The pile surface. of the web of fabric whenthus led through the machine is presented toward the .niovable plate-n.The movable platen is actuated in such a manner that it has to move in adifferent direction from the direction of move merit of the web ofcloth. In producing the. Whitney type of finish the inovementof thefabric is .arectilinear movement either at right angles to or oblique tothe direction of movement of the web of fabric. In the production ofchinchilla cloth the movable platen is moved in a'curvilinear path aboutaxes which are perpendicular to the plane of the faces of the platens.As the web of fabric passes first above and then below the platen theupper and lower surfaces of the movable platen move in reversedirections thus tending to move the fibres of the pile first in onedirection and then in the re verse direction. This movement of thefibres tends to more effectively straighten the curl from the fibres andwhen moved in circular paths, as in producing chinchilla finish, tocause groups of fibres to be wound'into the respective knobs to whichthey belong and any fibres belonging to one group which are first woundinto the knob of a different group are by the reverse movement separatedtherefrom and twisted into the group to which they belong, therebyproducing a more permanent and better appearing chinchilla finish.

By progressively moisten'ing the pile of the cloth as it approachesengagement. by the stationary and movable platens the fibres are mademore pliable and more easily responsive to the action of the finishingmechanism and by applying heat during the passage of the web through themachine, preferably during the last finishing stage, the moisture isexpelled from the fibres and they retain more permanently the positionin which they are placed by the finishing mechanism. Thus a more perfectand permanent finish is produced.

It will be understood that the embodiment of the invention disclosedherein is illustrative and not restrictive and that various changes inform, construction and arrangement of parts may be made within thespirit and scope of the following claims.

Having thus described the invention, what is claimed new, and desiredtobe secured by Letters Patent, isz' 1. The process of treating pilefabrics hav ing a nap comprising fibres of a ,wooly nature to produce achinchilla finish which action of a plurality consists in rotating thefibres of the pile in one direction to cause a grouping of the fibresand the interlacing of the fibres of the respective groups to producenobs, then rotating the piles in the opposite direction to causestraggling fibres to become asso ciated with the nobs to which theynaturally belong.

52. The process of treating a pile fabric to produce a chinchilla finishwhich comprises subjecting the pile of a continuously moving web offabric progressively to the action of a plurality of flat surfaces having respectively curvilinear movements in reverse directions aboutaxeswhich are substantially perpendicular to the direction of movementof the web. Y

The process of treating a pile fabric to produce a chinchilla finishwhich com.-v prises subjecting the pile of a continuously moving web ofthe fabric progressively to the action of a plurality of flat surfacesunder pressure and rotating respectively in clockwise andcounterclockwise directions about central axes perpendicular tothedirection of movement ofthe web.

i. I he process'of treating pile fabric, having a nap comprising fibresof a woolen nature, to produce groups of interlaced pile fibres whichcomprises moisteningthe pile face of a moving web of the fabric,rotating the fibres of the pile in one direction to cause a grouping ofthe fibres and the interlacing of the fibres of the respective groups,thereafter rotating the pile in the opposite direction to causestraggling fibres to be associated with the nobs'to which they belongand subjecting the fibre to heat to fix the fibres thus associated inthe respective nobs firmly in position.

5. The process of treating a pile fabric to produce a chinchilla finishwhich comprises moistening the body of the fabric, subjecting the pilethereof progressively to theaction of a pluralityof flat surfaces underpressure moving in curvilinear paths in IGSPQC". tively reversedirections about axes perpendicular to the direction of movement of theweb.

6. The process. of treating a pile fabric to produce a chinchillafinishwhich comprises moistening the body of the fabric, subject ing thepile thereof progressively to the action of a plurality of flat surfacesunder pressure moving in curvilinear paths in respectively reversedirections about axes perpendicular to the direction of movement of theweb and heating the fabric during the action of one of the movingsurfaces upon the pile.

7. The process of treating a pile fabric to produce a chinchilla finishwhich comprises moistening the body of the fabric, subjecting the pilethereof progressively to the of flat surfaces under pressure moving incurvilinear paths in respectively reverse directions about axesperpendicular to the direction of H10V611111t of the web and heating thelast of the moving surfaces during its action upon the pile to expel themoisture from the fabric.

8. An apparatus for treating napped fabric comprising a plurality ofplatens having co-operating pairs of flat frictional surfaces, one ofthe surfaces of each pair being stationary and the other movable, meansfor passing a web of fabric progressively between the co-operatingsurfaces of successive pairs of platens with the nap of the fabricpresented to the movable surfaces and means for imparting to saidmovable surfaces movements in different directions relatively to eachother and also relatively to the direction of movement of the web offabric.

9. An apparatus for treating napped fabric comprising a plurality ofplatens having co-operating pairs of frictional surfaces, one of thesurfaces of each pair being stationary and the other movable, means forpassing a web of fabric progressively between the co-operating surfacesof successive pairs of platens with the nap of the fabric presented tothe movable surfaces and means for imparting to said movable surfacescurvilinear movements in respectively reverse directions about axesperpendicular to the direction of movementof the web of fabric.

10. An apparatus for treating napped fabrics comprising superposed upperand lower stationary platens, a movable platen intermediate of saidstationary platens and provided with frictional surfaces contiguous tothe respective surfaces of the stationary platens, means for passing theweb of fabric progressively over the stationary platens with the nap ofthe fabric presented to the intermediate platen and means for moving theintermediate platen in a direction difierent from the direction ofmovement of the web of fabric.

11. An apparatus for treating napped fabrics comprising superposed upperand lower stationary platens, a movable platen intermediate of saidstationary platens and provided with frictional surfaces contiguous tothe respective surfaces of the stationary platens, means for adjustingthe relative positions of said platens, means for passing the web offabric progressively over the stationary platens with the nap of thefabric presented to the intermediate platen and means for moving theintermediate platen in a direction different from the direction ofmovement of the web of fabric.

12. An apparatus for treating napped fabrics comprising superposed upperand lower stationary platens, a movable platen intermediate of saidstationary platens and provided with frictional surfaces contiguous tothe respective surfaces of the stationary platens, means for adjustingthe relative positions of said platens, means for passing the web offabric progressively over the stationary platens with the nap of thefabric presented to the intermediate platen and means for imparting tothe intermediate platen a rotative movement about an axis perpendicularto the direction of movement of the web of fabric.

13. In an apparatus for treating pile fabrics to produce a chinchillafinish comprising a plurality of platens having co-operating pairs offlat frictional surfaces, one of the surfaces of each pair beinstationary and the other movable, means for passing a web of fabricprogressively between the co-operating surfaces of successive pairs ofplatens with the nap of the fabric presented to the movable surfaces,means for moistening the pile side of the fabric before its introductionbetween the first of said pairs of surfaces, means for imparting to themovable surfaces movements respectively in the reverse direction aboutan axis perpendicular to the direction of movement of the web of fabric,and means for applying heat to the body of the fabric during its passagebetween the last of said pairs of relatively movable surfaces.

14. An apparatus for treating pile fabric comprising an upper stationaryplaten, a lower stationary platen having a heating chamber therein andmeans for supplying a heating fluid thereto, an intermediate movableplaten having frictional surfaces contiguous to the respective surfacesof said stationary platens, means for moving the intermediate platen ina curvilinear path about an axis which is perpendicular to the faces ofthe stationary platens, of means for passing a web of fabricprogressively between the upper stationary platen and the movableplaten, and then between the lower stationary platen and the movableplaten with the napped surfaces of the web at all times presented to thefrictional surfaces of the movable platen, and means for progres sivelymoistening the pile surfaces of the fabric as it approaches engagementby the (ho-operating surfaces of the upper stationary platen and themovable platen.

15. Anapparatus for treating pile fabrics comprising a stationary platenand a cooperating relatively movable platen, means for passing the webof fabric between said platens, means for actuating said movable platenincluding shafts perpendicular to the plane of reciprocation of saidmovable platen having cranks connected with said movable platen andcounterbalancing means connected to said shafts.

16. An apparatus for treating pile fabrics comprising a stationaryplaten and a co operating relatively movable platen, means therefrom andcounterweights adjuzstably mounted upon said screw threaded rods.

In testimony whereof, We have signed our 10 names to this specification.

MANLEY A. SPAULDING. CHARLES P. THIEL.

